CN107569979A - A kind of structures and methods for eliminating absorption tower exit sharp pounding - Google Patents
A kind of structures and methods for eliminating absorption tower exit sharp pounding Download PDFInfo
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- CN107569979A CN107569979A CN201710868170.5A CN201710868170A CN107569979A CN 107569979 A CN107569979 A CN 107569979A CN 201710868170 A CN201710868170 A CN 201710868170A CN 107569979 A CN107569979 A CN 107569979A
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- Prior art keywords
- absorption tower
- exhaust pass
- deflector
- spacing
- sharp pounding
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 14
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 14
- 230000035772 mutation Effects 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 235000019504 cigarettes Nutrition 0.000 claims description 2
- 230000007062 hydrolysis Effects 0.000 abstract description 6
- 238000006460 hydrolysis reaction Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000008092 positive effect Effects 0.000 abstract description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
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- Treating Waste Gases (AREA)
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Abstract
A kind of structure for eliminating absorption tower exit sharp pounding, in IGCC power stations, cos (COS) in former synthesis gas are absorbed by hydrolysis absorption tower, former synthesis gas is entered in tower by inlet flue duct, ultimately form net synthesis gas by demister, flue demister, exhaust pass in pallet, absorbed layer, tower successively from down to up.Because absorption tower exhaust pass and tower body are in 90 ° of arrangements, and flue demister cross-sectional area is larger, and absorption tower exit is in bell shape, so absorption tower exit easily produces an air flow swirl, so as to trigger sharp pounding.The present invention by exhaust pass horn mouth position be provided with it is some to gas rise guide functions nonuniform mutation operator deflectors, the air flow swirl at the horn mouth of absorption tower exit can be eliminated, so as to eliminate vibrations, not only easy to implement but also positive effect, COS hydrolysis efficiencies can be provided simultaneously, the overall pressure drop on absorption tower can also be reduced, saves energy consumption.
Description
Technical field
It is more particularly to a kind of to eliminate absorption tower the invention belongs to synthesis gas COS hydrolysis process technical fields in IGCC power stations
The structures and methods of exit sharp pounding.
Background technology
In IGCC power stations, the desulfurization of gasification furnace exiting syngas, mainly absorbed by hydrolysis method in synthesis gas
Cos (COS).The height relative diameter on absorption tower is very big, is in the form of a column.Increase flue demister in the exit on absorption tower,
COS absorption efficiencies can further be improved.Because the cross-sectional area of absorption tower outlet is less than the cross-sectional area of flue demister, institute
Bell-mouthed shape has been made with the outlet on absorption tower.Due to bell-mouthed presence so that flow field is unstable in the presence of one herein
Synthesis gas whirlpool, so as to not only increase the pressure drop on absorption tower, and the strong vibrations in absorption tower can be caused, or even can cause
Serious accident.
The content of the invention
The shortcomings that in order to overcome above-mentioned prior art, it is strong to eliminate absorption tower exit it is an object of the invention to provide one kind
The dynamic structures and methods of violent shock, by setting guiding device in the exit on absorption tower, for eliminating gas swirl, solve above-mentioned
Problem.
To achieve these goals, the technical solution adopted by the present invention is：
A kind of structure for eliminating absorption tower exit sharp pounding, the outlet on absorption tower 2 are in bell shape, exhaust pass
8 with the tower body of absorption tower 2 in 90 ° arrangement, in exhaust pass 8 horn mouth position be provided with it is some to gas rise guide functions lead
Flowing plate 6.
The deflector 6 is made or in surface spraying anti-corrosion material using anti-corrosion material.
The deflector 6 sets 3~6 groups from top to bottom, and every group is made up of according to mounting condition polylith.
Micro gap is left between the deflector 6 and between deflector 6 and the side wall of exhaust pass 8.
The deflector 6 is divided into horizontal segment and empennage section along synthesis gas flow direction, and the length of horizontal segment is with exporting cigarette
The entrance horizontal segment in road 8 is identical, and empennage segment length is 0.1L2~0.2L2, L parallel with the horn mouth side of exhaust pass 82It is
The entrance horizontal section length of exhaust pass 8 and oared segrne pii length sum.
The horizontal segment of spacing and deflector 6 between the horizontal segment of the deflector 6 and the entrance of exhaust pass 8 are horizontal
Section side wall spacing is nonuniform mutation operator, and spacing above is small, and spacing below is big.Uppermost spacing, i.e. the superiors' deflector 6
It is minimum spacing h with the spacing of side wall on exhaust pass 81, h1=0.1L1~0.2L1, nethermost spacing, i.e. orlop are led
The spacing of flowing plate 6 and the lower side wall of exhaust pass 8, it is maximum spacing h5, h5=0.3L1~0.4L1, L1It is the minimum of exhaust pass 8
Diameter, i.e. horn inlet diameter, namely the entrance horizontal segment diameter of exhaust pass 8.
The empennage elongated segment line of the deflector 6 to the spacing between the horn outlet intersection of exhaust pass 8 is uniform
Arrangement.
The absorption tower 2 enters absorption tower including inlet flue duct 1, successively by demister 5 in pallet 3, absorbed layer 4, tower,
Flue demister 7 and exhaust pass 8, former synthesis gas enter tower body by inlet flue duct 1, successively by pallet 3, absorbed layer 4, tower
Demister 5, deflector 6, flue demister 7 and exhaust pass 8, ultimately form net synthesis gas and arrange to air.
The present invention eliminates the method for absorption tower exit sharp pounding, the guide functions using deflector 6 to gas, eliminates
The whirlpool of gas flowing, so as to solve vibration problems.
Compared with prior art, the present invention is capable of the gas flowfield in reasonable distribution absorption tower exit, can be completely eliminated
Air flow swirl at the horn mouth of absorption tower exit, shaken so as to eliminate, not only easy to implement but also positive effect, while can
COS hydrolysis efficiencies are provided, the overall pressure drop on absorption tower can also be reduced, save energy consumption.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is the layout drawing of deflector.
Fig. 3 is the flow field at horn mouth before transforming.
Fig. 4 is to increase the flow field after deflector at horn mouth.
Fig. 5 is to increase the overall simulation design sketch after deflector.
Embodiment
Describe embodiments of the present invention in detail with reference to the accompanying drawings and examples.
As shown in figure 1, a kind of structure chart for eliminating the vibrations of absorption tower exit, former synthesis gas is entered by inlet flue duct 1 to be inhaled
Tower tower body is received, successively by demister 5, deflector 6, flue demister 7 in pallet 3, absorbed layer 4, tower, finally by exhaust pass
8 rows are to air.Because exhaust pass 8 and tower body are in 90 ° of arrangements, and the cross-sectional area of flue demister 7 is larger, absorption tower exit
In bell shape, so absorption tower exit easily produces a gas swirl, so as to trigger sharp pounding.
By simulation it can be seen that the whirlpool in absorption tower exit is as shown in Figure 3.The position of gas swirl as can be seen from Figure 3
Put mainly in horn mouth, caused by being primarily due to gas velocity skewness, flow velocity of the gas on top is higher, bottom
Flow velocity is relatively low.
Then according to size distribution of the gas in cross section, the deflector group of nonuniform mutation operator is designed, typically from top to bottom
3~6 groups are set, every group can be made up of according to mounting condition polylith, and deflector 6 is made or prevented in surface spraying using anti-corrosion material
Rotten material.Micro gap is left between deflector 6 and between deflector 6 and the side wall of exhaust pass 8.
The deflector 6 designed according to Fig. 3 is as shown in Figure 2.It can divide a horizontal segment and empennage section along gas flow direction.Water
The length of flat section is identical with respective horizontal flue, and empennage segment length is 0.1L2~0.2L2。
To cause the gas velocity in absorption tower exit uniform, the spacing for setting deflector horizontal segment is nonuniform mutation operator,
Spacing above is small, and spacing below is big, uppermost spacing, i.e. minimum spacing h1, typically it is dimensioned to 0.1L1~
0.2L1, nethermost spacing, i.e. maximum spacing h5, typically it is dimensioned to 0.3L1~0.4L1；The empennage Duan Yan of deflector
Long line is to be evenly arranged to the spacing between horizontal flue demister entrance intersection, i.e. spacing h0It is equal.
The absorption tower flow field for adding deflector is simulated, as a result as shown in figure 4, in absorption tower exit, water conservancy diversion
Plate 6 is reasonably assigned with synthesis tolerance, and gas flowing whirlpool is wholly absent.
The overall flow field design sketch in the absorption tower exit after deflector is added as shown in figure 5, gas flowfield uniformly divides
Cloth, and the pressure drop on absorption tower significantly reduces, while COS hydrolysis efficiencies, significant effect can be provided.
Claims (10)
1. a kind of structure for eliminating absorption tower exit sharp pounding, the outlet of absorption tower (2) is in bell shape, exhaust pass
(8) with absorption tower (2) tower body in 90 ° of arrangements, it is characterised in that horn mouth position is provided with some right in exhaust pass (8)
Gas plays the deflector (6) of guide functions.
2. the structure of absorption tower exit sharp pounding is eliminated according to claim 1, it is characterised in that the deflector
(6) it is made or in surface spraying anti-corrosion material using anti-corrosion material.
3. the structure of absorption tower exit sharp pounding is eliminated according to claim 1, it is characterised in that the deflector
(6) 3~6 groups are set from top to bottom, and every group is made up of according to mounting condition polylith.
4. the structure of absorption tower exit sharp pounding is eliminated according to claim 3, it is characterised in that the deflector
(6) micro gap is left between and between deflector (6) and exhaust pass (8) side wall.
5. according to the structure for eliminating absorption tower exit sharp pounding of claim 1 or 3, it is characterised in that the water conservancy diversion
Plate (6) is divided into horizontal segment and empennage section along synthesis gas flow direction, and the length of horizontal segment is horizontal with the entrance of exhaust pass (8)
Duan Xiangtong, empennage segment length are 0.1L2~0.2L2, L parallel with the horn mouth side of exhaust pass (8)2It is exhaust pass (8)
Entrance horizontal section length and oared segrne pii length sum.
6. the structure of absorption tower exit sharp pounding is eliminated according to claim 5, it is characterised in that the deflector
(6) spacing between horizontal segment and the horizontal segment of deflector (6) and the entrance horizontal segment side wall spacing of exhaust pass (8) are
Nonuniform mutation operator, spacing above is small, and spacing below is big.
7. the structure of absorption tower exit sharp pounding is eliminated according to claim 6, it is characterised in that uppermost
Away from the spacing of side wall that is, on the superiors' deflector (6) and exhaust pass (8), is minimum spacing h1, h1=0.1L1~0.2L1, most
Following spacing, the i.e. spacing of orlop deflector (6) and exhaust pass (8) lower side wall, it is maximum spacing h5, h5=0.3L1~
0.4L1, L1It is the minimum diameter of exhaust pass (8), i.e. horn inlet diameter, namely the entrance horizontal segment of exhaust pass (8) are straight
Footpath.
8. the structure of absorption tower exit sharp pounding is eliminated according to claim 6, it is characterised in that the deflector
(6) empennage elongated segment line is to be evenly arranged to the spacing between the horn outlet intersection of exhaust pass (8).
9. the structure of absorption tower exit sharp pounding is eliminated according to claim 1, it is characterised in that the absorption tower
(2) absorption tower is entered including inlet flue duct (1), successively by demister (5), flue demisting in pallet (3), absorbed layer (4), tower
Device (7) and exhaust pass (8), former synthesis gas enter tower body by inlet flue duct (1), successively by pallet (3), absorbed layer (4), tower
Interior demister (5), deflector (6), flue demister (7) and exhaust pass (8), ultimately form net synthesis gas and arrange to air.
10. a kind of method for eliminating absorption tower exit sharp pounding, the outlet of absorption tower (2) is in bell shape, exports cigarette
Road (8) is with absorption tower (2) tower body in 90 ° of arrangements, it is characterised in that horn mouth position sets some lead in exhaust pass (8)
Flowing plate (6), the guide functions using deflector (6) to gas, the whirlpool that gas flows is eliminated, so as to solve vibration problems.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710868170.5A CN107569979A (en) | 2017-09-22 | 2017-09-22 | A kind of structures and methods for eliminating absorption tower exit sharp pounding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710868170.5A CN107569979A (en) | 2017-09-22 | 2017-09-22 | A kind of structures and methods for eliminating absorption tower exit sharp pounding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107569979A true CN107569979A (en) | 2018-01-12 |
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ID=61038698
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710868170.5A Pending CN107569979A (en) | 2017-09-22 | 2017-09-22 | A kind of structures and methods for eliminating absorption tower exit sharp pounding |
Country Status (1)
| Country | Link |
|---|---|
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202146712U (en) * | 2011-06-27 | 2012-02-22 | 南京龙源环保有限公司 | Smoke catalytic reduction denitration device capable of mixing uniformly, equalizing and guiding flow |
| CN104740993A (en) * | 2015-04-13 | 2015-07-01 | 中电投远达环保工程有限公司 | Three-stage zoned collaborative dust removal and desulfurization system |
-
2017
- 2017-09-22 CN CN201710868170.5A patent/CN107569979A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202146712U (en) * | 2011-06-27 | 2012-02-22 | 南京龙源环保有限公司 | Smoke catalytic reduction denitration device capable of mixing uniformly, equalizing and guiding flow |
| CN104740993A (en) * | 2015-04-13 | 2015-07-01 | 中电投远达环保工程有限公司 | Three-stage zoned collaborative dust removal and desulfurization system |
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Application publication date: 20180112 |
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